Difference between revisions of "Simulation Meeting March 28 2019 1030AM ET"

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==Minutes==
 
==Minutes==
 
Simulation Results:
 
Simulation Results:
−
*
+
* SLAC data analysis and simulation
 
Pull Requests:
 
Pull Requests:
 
*  
 
*  
 
Issues:  
 
Issues:  
−
*  
+
* Low energy neutrals "missing"
−
 
+
** QGSP_bert physics list has been default for a while
 +
** QGSP_bert_HP (high precision) will probably fix low energy neutral abundance problem
 +
** Add a warning to GDML aux tag to alert the user to use an appropriate physics list for "lowenergyneutral" detector types
 +
* Collimator power and coil sensitivity variations
 +
** Rerunning the simulation for a million events gives ~10% deviations in results from run to run sometimes
 +
** Instead of single-run simulating do N fold million/N runs and calculate mean and RMS (and also see if the RMS behaves as counts vary)
  
 
<br><br> Return to [[Simulation_Meetings | Simulation Meetings]]
 
<br><br> Return to [[Simulation_Meetings | Simulation Meetings]]
 
<br> Return to [[Main_Page|Main Page]]
 
<br> Return to [[Main_Page|Main Page]]

Revision as of 14:56, 28 March 2019

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Task List Summary

Simulation Task List Updated 2019

Agenda

JLab room CC B101 is reserved for the meeting

  • Simulation task list discussion
    • Radiation/Shielding
      • Radiation load on hybrid toroid nose: Rakitha, Juliette
      • Radiation shielding and activation: Rakitha, Kent, and Ciprian
    • Overall Background studies:
      • Air/vacuum?He simulation studies: Ciprian
      • Slit scattering background* (the elimination of all 1-bounce sources and the leading 2-bounce sources): KK (student?)
    • General Spectrometer:
      • Multi-loop spectrometer option: Juliette
    • Detector area background:
      • Optimized main detector geometries: Ciprian
      • Detector Shielding Optimization*: KK, Cameron
      • Shower-max splashback: KK (student?)
      • Crosstalk evaluation: KK (student?)
      • PMT backgrounds*: Juliette, Sakib
      • PMT double-differences: Ciprian, Kent
      • Muon pair production: Wouter
      • Beam dump background impact on Pion detector: Wouter
      • Beam dump background impact on the Main detector (Beam dump background estimate and shielding requirements):?
      • Hyperon background estimation*: Wouter
    • Tracking:
      • Optics Collimator for Q2*: Seamus, David A.
    • Theory:
      • Radiative corrections for all physics processes: Seamus, Yuri
  • Simulation software updates:
    • Raster update: use the new raster with beam generator in develop branch
    • Energy deposit: The discrepancy may have been due to old and new raster applied simultaneously. The physics list QGSP_BERT vs. QGSP_BERT_HP can have 10% discrepancy in energy.
  • Pull requests [1]:
  • Issues [2]
  • Are we going to add fringe field map files in the simulation by default?
  • Cameron: SLAC test data analysis and simulation: slides

Attendance:

Attendance: Cameron, Wouter, Chandan, Ciprian, Sakib

Minutes

Simulation Results:

  • SLAC data analysis and simulation

Pull Requests:

Issues:

  • Low energy neutrals "missing"
    • QGSP_bert physics list has been default for a while
    • QGSP_bert_HP (high precision) will probably fix low energy neutral abundance problem
    • Add a warning to GDML aux tag to alert the user to use an appropriate physics list for "lowenergyneutral" detector types
  • Collimator power and coil sensitivity variations
    • Rerunning the simulation for a million events gives ~10% deviations in results from run to run sometimes
    • Instead of single-run simulating do N fold million/N runs and calculate mean and RMS (and also see if the RMS behaves as counts vary)



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